src/org/apache/pig/impl/io/NullableUnknownWritable.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.pig.impl.io;

import org.apache.hadoop.io.WritableComparable;

/**
 * This class can be used when data type is 'Unknown' and 
 * there is a need for PigNullableWritable object. 
 */
public class NullableUnknownWritable extends PigNullableWritable {

    public NullableUnknownWritable() {
    }
    
    public NullableUnknownWritable(WritableComparable<?> u) {
        mValue = u;
    }

    @Override
    public Object getValueAsPigType() {
        return isNull() ? null : mValue;
    }
}